Piston for gas engine and gas engine with same

A gas engine and piston technology, used in engine components, combustion engines, machines/engines, etc., can solve problems such as engine misfire, poor combustion performance, and increased combustion cycle variation, reducing airflow velocity, improving combustion performance, and increasing flame. The effect of propagation speed

Inactive Publication Date: 2019-12-31
WEICHAI POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to at least solve the problem of poor combustion performance of the gas engine in the prior art and the strong air flow in the cylinder causing the engine to misfire and increase the variation of the combustion cycle. This purpose is achieved through the following technical solutions:

Method used

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  • Piston for gas engine and gas engine with same
  • Piston for gas engine and gas engine with same
  • Piston for gas engine and gas engine with same

Examples

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Embodiment Construction

[0034] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0035] It should be understood that the terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" may also be meant to include the plural forms unless the context clearly dictates otherwise. The terms "comprising", "comprising", "containing" and "having" are inclusive and thus indicate the presence of stated...

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PUM

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Abstract

The invention belongs to the technical field of engines, and particularly relates to a piston for a gas engine and the gas engine with same. The piston comprises a combustion chamber arranged at the top of the piston, wherein the combustion chamber is of a cylindrical cavity shape structure, and the combustion chamber is provided with an inward concave portion extending in a direction away from the axis of the piston. According to the provided piston for the gas engine, the inward concave portion is additionally arranged inside the combustion chamber, so that airflow entering an air cylinder is guided, relatively strong turbulent flow is locally formed, the flame propagation speed is increased, the equivalent gas engine combustion performance is improved, meanwhile, extrusion flow is generated through an asymmetric structure, so that the influence of a part of tumble flow on the vicinity of a spark plug is counteracted, the airflow speed on the vicinity of the spark plug is reduced, and the misfire risk is reduced.

Description

technical field [0001] The invention belongs to the technical field of engines, and in particular relates to a piston for a gas engine. The invention also relates to a gas engine. Background technique [0002] This section provides background information related to the present disclosure only and is not necessarily prior art. [0003] Since the natural gas engine does not contain C-C chain in the combustion process, the soot emission generated during the combustion process is very low. At the same time, the carbon content in natural gas is low, and the carbon emission of the same heat is lower than that of diesel and gasoline fuel. Therefore, natural gas is used as fuel for motor vehicles. Emissions can be effectively controlled, which is of great significance for alleviating environmental pollution and reducing carbon emissions. [0004] However, due to the slow propagation speed of the methane laminar flame, the combustion speed of the existing natural gas engine is slow...

Claims

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Application Information

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IPC IPC(8): F02F3/26F02B23/08
CPCF02B23/08F02F3/26Y02T10/12
Inventor 贾德民王晓艳贾义祁同晖
Owner WEICHAI POWER CO LTD
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